Resilient tire.



H. GAPDEVIELLE.

RBSILIBNT TIRE.

APPLICATION FILED Muze, m11

11,08%04@ Patented m1131914.

RESLENT TIRE.

insonni.

Specification of Letters Patent.

Patented Mair. d, 1914..

Application filed Muy El), 1911. Serial No. @3,47%

To all rv/"wm it may ooi/wem;

it known that L HENRY UsPnnvirnnnL a citizen of the United States, residing at l/Vusliington9 .in the District oi Columbia, lieve invented certain new and useful Iniirovenients in Resilient Tires, of which the following' is o specification.

My invention relates to improvements in resilient tires und for its object to rovide n n improved construction of resilient tire particularly intended for usein connection with motor cars but applicable also to other uses.

ll'iyl invention comprises u series of ineinbers piojeotiingr outwardly from e Wheel rim plate und slidingly engaging inwardly en tending members on shoe plates which shoe plates :ire adapted to conform to ind bee-r on the inner surface of the flexible envelop or tire; springs between the riin and -slioe plates adopted to hold the flexible envelop or tire in extended position end elastic Ineens adopted to hold the shoe plates in circumferential nlinenient.

The principal object of rny invention is "provide un arrangement of the springs end their holding structures whereby tlie iced will distributed among the adjacent springs :is the spring holding menne adapts itselil to the compression oftlint portion of tbe tire which conies in Contact with the ns the tire revolves.

Another object of my invention is to pron `ide ineens for allowing longitudinal disleccnient of the shoes end springs Without tuent creeping.

inotlier object of my invention is to prdvvid un rlditionul resilient member on the e of the tire Wliieli Will be adepttlie slioe plates in circumferential ictlier object of my invention is to provide ineens for preventing lateral deflections of the slice plates und consequent collapse the tire when skidding or subjected to thrusts.

With thcsennd other objects in view the :invention consists in the novel construction und arrangement of parts hereinafter described, delineated in the drawings :ind speully cleinied, it being' understood that properly felling Within the sco e what is eluiined may be inode Without de elli porting from the spirit of my' invention.

l! l: n l ""U Similar numerals of l ,spending ports nloyed to Ydenote throughout tlic several figures of the drewinfgs.

In the accompanying drawings: Figure l .is e radial cross section through the envelop and .rim oi the wheel teken on, line li-l Fig. V. The spring sont members or shoes ure shown engaged 'with the extending members of the rim, one spring being shown in place. Figli is a longitudinal section through the envelop and rim showing the features as Fig. I but with the springs removed Fig. lll is in port e top or plan view sind in part e liorizontsl section on line lll-lll of Fig'. l shovviiinin section the rim extending members engaging the slioe. The

section is teken on plone looking toward the rim of the Wlieel as indicated by arrows" in llig. l. Fig. lV is in part a plan view of one of. the shoes und in port o. horizontal section token on line lVMlV ol? Il. The section is token on u. plone looking' toward the shoe or toward the envelop oit? the v Lire, es indicated by the urroivs. Fig'. l' shows u longitudinal view ofthe wheel in vertical section through the rini and tire,

illustrating the action of the shoes -vvlienI the load compresses one set ot springs, the

two adjacent shoes beingr brought into action.A

Referring specifically to the drawings: To the elly l oit' the Wlieel is secured a rim plete 2 'which has e lvertical flange fitted A to the inner side of the folly. il. plurality of transverse bosses @l on the. rini 2 project into corresponding recesses in the fely'nnd prevent creeping of the rim plete thereon.

The riin plete is lield in place on the folly` Iby ineens of bolts 5 which pass through the vertical longe 3 and the telly, being retained in place by nuts 6P und u looking plate 7 lit- 'ted to the outer side of the folly, ns shown in Fig. l. The envelop or tire 23 is secured lli) to depending flanges 8 on the rim plate by ineens of locking plates 9 end bolts l0, as indicatedlin Fig. l.

The envelop or tire is held extended es follows: @n the under side of the rini plete is o plurality of outwardly extending bosses 11, to each of which is secured en extension member 12, 'which is bifurcated or divided longitudinally. If desired this extension member muy be stiilened by brackets 1.3 or other ineens to prevent lateral deflcc n `or distortion. The extension member embraces between its divided portion a lnnge'llnu lio taclied to u slice 15 which conforms to e portion of the inner surface of the tire, ns shown place on `the extension members.

in Figs. I and Il. These shoes are spaced at determined' intervals around the inner side of the envelop and held in circumferential alinement by an elastic member 16 'adapted to lit in recesses l? on the under side of the shoes; on the sides of the shoe' flange 14 which engages the rim extension member l2 are rounded bearing surfaces "18 which allows the vslice to have a longitudinal os' cillatory end sliding movement with relation to the rim extension member. These bearings prevent the shoes from slipping out of the divided portions of the rim extension membersrand the consequent creeping of the slices in the envelop or tire and also permit an oscillatory sliding movement between the shoe and divided members. The divided portions of the rim extension memi bers also prevent lateral deflection of tie shoes. The springs 19, which hold the shoes extended on the rim extension member are held in place and compressed between dowel shaped projections the rimplate, and corres ending and opposed projections 2l, on osses 2 2 on the shoes. The parts maybe lightened by any suitably arranged lightening holes 23 'and the extending members stiii'ened as required.

The parts are assembled as follows: The 'extension members` l2 are attached to the bosses ll ofthe flanged rim plate, the springs 19 inserted over the projecting dowel 2l on the shoe plate, the shoe flanges pushed into the divided portions of the extension members l2. of the rim plate. The shoe is then pushed upward on the extension member 12 until the upper end of the spring is pushed over the projecting dowel 20 of the rim plate. The elastic 'ring i6 is then sprung over the shoes and into the recesses 17 therein,

The flexible cover or envelop is next putin place over .the shoes and the ends secured to the depending` flangeson the rim plate as shown in Fig. I. j

The operation is as follows: The envelop or tire is heldextended by the shoes which are pressed' outwardly by the action of the springs, the vertical flange of the shoes working bach: and forth in the divided portion of the extension members l2 of the rim plates as pressure is applied or relieved during the revolutions of the wheel, the cushioning eflect of resilient tires being obtained thereby. As the shoes are independent of each other, local yielding or compression is allowed as theload is applied. lhen the load compresses one or more shoes, the two 20, on the bosses 1l of thereby holding the shoesv in 'theme44 shown in Fig. V, a certain amount of sliding elongitudinal oscillatory displacement of the shoe being permitted without creeping in the tire, thereby distributing the load and preventing any one set of the springs being over taxed through the forward motion of the car or when 'the car is stationary and the load distributed to the two adjacent shoes. The rounded bearingvportions 18 allow a rocking vmotion of the shoe in the direction of the circumference of the wheel. These portions engage the edges of the extension member l2 extending from the tire rim and shoe from creeping around the inner surface of the tire and from getting out of alinement with the extension f member. lf lateral forces are generated by the sliding or skidding of the .wheels f thev long ovenapping bearing between the extension members of the rim plate and the/,vertical flanges of shoes will prevent lateral displacement of Ythe shoe plates and,th'gconsequent defiection and tearing off ol/fthe envelop, which construction inconjunct/ion with the means for allowing longitudinl sliding oscillatory displacement without creeping, is a novel feature of my invention.

Having now described my invention, the following is what l claim as new therein and desire to secure by Letters Patent;

l. A shoe plate for a resilient tire comprising a circumferential portion adapted to wardly extending longitudinal flange, and laterally projecting rounded bearing shoulders adjacent the inner end of the inwardly extending flange substantially as shown and described.

2. Ina resilient tire a wheel rim comprising a circumferential portion adapted to fit the felly and a plurality of outwardly extending separated members divided longitudinally; and a shoe plate comprising a circumferential portion adapted to fit the inner curvature of the tire and an inwardly extending longitudinal flange fitting between the halves of the separated member on the rim and having fixed r'ounM bearing shoulders adjacent its inner ends-adapted to slidingly andy oscillatingly engage the edges of the divided member of the wheel rim.

In testimony whereof l aiiix my signature in presence of two witnesses.

HENRY GAPDEVELLFJ.

Witnesses J. L. Jones, R. M. STRonnaND.

oscillate thereon, thereby preventing the4 l aadjacent shoes are brought into action as 'Se fit the inner curvature of the tire, an in- 

